Make Garlic Croutons: Preheat oven to 375°F. In a medium bowl combine 1 Tbsp. tahini and 1 clove of the minced garlic. Cut bread into ½-inch cubes. Add to tahini mixture; toss to coat. Place on a baking sheet. Bake 6 to 8 minutes or until crisp and lightly browned. Cool on a wire rack.
In a large pot cook onion, celery, and the remaining garlic over medium 3 to 4 minutes, stirring occasionally and adding water, 1 to 2 Tbsp. at a time, as needed to prevent sticking. Add milk, 2 cups of the broccoli, the potatoes, beans, dill, and paprika. Bring to boiling; reduce heat. Cover and simmer 10 minutes or until potatoes are very tender.
Using an immersion blender, puree the soup until it is mostly smooth. Add remaining broccoli and cook 4 to 5 minutes or until broccoli is tender. Season with salt and pepper. Drizzle each serving with additional milk, if desired, and top with Garlic Croutons.
